Attheendoftheconference,allthe_(participate)wereaskedtofilloutaquestiolmaire
质量m=2kg的质点沿x轴运动，运动方程为x=0.5t2(SI)，从t=0s到t=3s过程中，外力对质点做功为（）
一确定静电场中某点的电势值取决于()
Itwas________ofyounottodisturbuswhileweweresleeping
Goodparentshavetheabilitytocommunicatemessagesoflove,trust,andself-worth______theirchildren
